/* GDK - The GIMP Drawing Kit

 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/*

 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GTK+ Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 

 */

#include "config.h"

#include <glib/gprintf.h>

#include <stdlib.h>

#include <string.h>

#include "gdkkeysyms.h"

#include "gdkinternals.h"

#include "gdkalias.h"

/* Key handling not part of the keymap */

#include "keyname-table.h"

#define GDK_NUM_KEYS G_N_ELEMENTS (gdk_keys_by_keyval)

static int

gdk_keys_keyval_compare (const void *pkey, const void *pbase)

{

  return (*(int *) pkey) - ((gdk_key *) pbase)->keyval;

}

/**

 * gdk_keyval_name:

 * @keyval: a key value

 *

 * Converts a key value into a symbolic name.

 *

 * The names are the same as those in the

 * <filename><gdk/gdkkeysyms.h></filename> header file

 * but without the leading "GDK_KEY_".

 *

 * Return value: (transfer none): a string containing the name of the key,

 *     or %NULL if @keyval is not a valid key. The string should not be

 *     modified.

 */

gchar*

gdk_keyval_name (guint keyval)

{

  static gchar buf[100];

  gdk_key *found;

  /* Check for directly encoded 24-bit UCS characters: */

  if ((keyval & 0xff000000) == 0x01000000)

    {

      g_sprintf (buf, "U+%.04X", (keyval & 0x00ffffff));

      return buf;

    }

  found = bsearch (&keyval, gdk_keys_by_keyval,

		   GDK_NUM_KEYS, sizeof (gdk_key),

		   gdk_keys_keyval_compare);

  if (found != NULL)

    {

      while ((found > gdk_keys_by_keyval) &&

             ((found - 1)->keyval == keyval))

        found--;

      return (gchar *) (keynames + found->offset);

    }

  else if (keyval != 0)

    {

      g_sprintf (buf, "%#x", keyval);

      return buf;

    }

  return NULL;

}

static int

gdk_keys_name_compare (const void *pkey, const void *pbase)

{

  return strcmp ((const char *) pkey, 

		 (const char *) (keynames + ((const gdk_key *) pbase)->offset));

}

/**

 * gdk_keyval_from_name:

 * @keyval_name: a key name

 *

 * Converts a key name to a key value.

 *

 * The names are the same as those in the

 * <filename><gdk/gdkkeysyms.h></filename> header file

 * but without the leading "GDK_KEY_".

 *

 * Returns: the corresponding key value, or %GDK_KEY_VoidSymbol

 *     if the key name is not a valid key

 */

guint

gdk_keyval_from_name (const gchar *keyval_name)

{

  gdk_key *found;

  g_return_val_if_fail (keyval_name != NULL, 0);

  found = bsearch (keyval_name, gdk_keys_by_name,

		   GDK_NUM_KEYS, sizeof (gdk_key),

		   gdk_keys_name_compare);

  if (found != NULL)

    return found->keyval;

  else

    return GDK_VoidSymbol;

}

#define __GDK_KEYNAMES_C__

#include "gdkaliasdef.c"